Elevator



N. D. HNMAN.

ELEVATUR.

No. 45,245. Patented Novl 29, 1864.

l l l rUNITED STATES PATENT CFFTCE.

N. D. HINMAN, OF PLEASANT VALE, CONNECTICUT.

ELEVATOR.

Specicaton forming part of Letters Patent No1 fu-5,245, dated NovemberReissued August 20, 1867, No. 20.

To all *whom it may concern Be 1t known that I, N. D. IIiNMAN, ot

i T 1 1 Pleasant Vale, m the county ot lvew tlaven and State ofConnecticut, have invented a new and useful Improvement in Elevators;and I do hereby declare that the follmving is a full, clear, an-d exactdescription thereof, which will enable others skilled in the art to makeand use the same, reference being had to the accompanying drawings,forming part of this specification, in which Figure l, is a sidesectional view of my invention, taken in the line fc, fr, Fig. 2. Fig.2, a plan or top view of the same.

Similar letters of reference indicate like parts.

This invention relates to a new and useful improvement in that class ofelevators which are connected with a car placed on elevated ways andarranged in such a manner that the load when ele rated may be drawn overthe spot where it is desired to have it deposited-and then dumped.

The invention is chiefly designed for elevating and moving hay and grainin barns but it is applicable to other purposes.

The invention consists in a novel construction and arrangement of part-spertaining to the car, whereby the same is held stationary when the-loadis being elevated and liberated automatically and allowed when the loadis elevated to travel on the ways over the spot where the load is to bedumped, the car being allowed to move back to its original position byits own gravity, the ways being inclined to admit of that result.

A represents the car composed of four parallel bars (a fitted or securedat equal distances apart on two axles B, B, on the outer ends of whichwheels C provided with flanges Z), are itted loosely.

Between the two center bars a, a, there is a fixed pulley D over whichthe hoisting rope E passes said rope being connected to the fork, bucketor other article which holds or contains the load to be elevated bymeans of a chain F which also passes over the pulley D, said chainhaving a button G, on its lower end, the use of which will be presentlyshown.

I-I is a pawl which at certain times catches into the chain F andprevents its descent over the pulley D. This pawl is fitted between thetwo central bars a, a, of the car i and is of right angular or bent formand its lmver end is directly opposite a sliding rod t) in the car saidrod extending through one end of the car and having a spiral spring Qupcn it which has a tendency to keep the inner end of the rod free fromthe lower end of the pawl, as will be understood by referring to bothfigures.

J, J, are two parallel bars or plates which are fitted atone end onpivots c between the outer and central bars a. of the car A. Theopposite end of these bars J J, are connected by a cross-piece K, which.when the bars J, J, are fully down rest in notches d, in theupperedges'of the bars a so that the upper surfaces of K. J, J, and fz. willbe tiush7 with each other or in one and the same plane.

L, L, are two bars which are fitted on pivots CZ between the outer andcentral bars a of the car. These bars L, L, project down below the car Aand their upper ends bear against the cross-piece K when the car is heldin position for the load to be elevated. The bars L L operate as stopsand prevent the car A from moving on its ways, M when the load is beingelevated, said bars bearing against pins c attached to the ways-see Fig.l. lVhen the car is at this point it will be seen that the bars L, L, inconsequence of being in Contact with the pins e will hold it while therope and chain E, F, are drawn up over the pulley D in the directionindicated by the arrow in Fig. l.. `When the load is fully elevated thebutton G comes in contact with the lower surfaces of the bars J, J, andraises them causing the cross-piece K to be thrown above the upper partsof the bars L, L, so that the latter will be free to turn on theirpivots Z and admit of the car A, under the pull of the hoisting rope E,to be drawn along on the ways M. vWhen the car reaches the point on theways where the load is to be dumped it is arrested by any suitable stopand the operator by means of a rope N, trips the fork or turns thebucket so as to dump the load. During the time the car is being drawnupon the ways M the pawl H is in contact with the chain F and preventsthe load descending in case of any checking of the horse or cessation ofpull on the rope E. This pawl is kept engaged with the chain F by itsown gravity only. 1When the load has been dumped the horse by which theload was elevated, is backed free from the chain F to admit of theemptyfork or bucket descending to be again filled or reloaded for asucceeding ascent, the bars L, L, passing` behind the pins e so as tohold the car when the load is again hoisted, and when the fork or bucketis again raised and the button G comes in contact with the bars J, J,and the latter are raised to liberate the car and admit of its beingdrawn on the ways with its suspended load, the pawl H will drop by itsown gravity and engage with the chain F, the rod O being forced back oroutward from the lower end of the pawl by the sprinO Q.

I would remark however in this connection that the pawl may be madesufiiciently heavy to force back the rod O when the latter is drawn fromthe stop. In this case the spring Q may be dispensed with.

rThe pawl H it will be understood is always in contact with the chain Fexcept when the empty fork or bucket' descends to be reloaded.

I would remark that the hoisting rope E is arranged over pulleys and hasthe horse attached to it in the same way as all similar elevatingdevices. By this arrangement I dispense with a weight and pulley to drawback the car after the load has been dumped and the device is much moresimple than those hitherto constructed to effect the. saine result, andworks much smoother and easier with less tear and wear and without anysudden jerks which attend the use of the cars which are provided withweights.

I claim as new and desire to secure by Letters Patent.

l. rIhe bars J, J, L, L, pivotedin the car A as shown, and the bars J,J, connected at one end by a cross-piece K,in combination with thebutton G, on the chain F, and the pins e on the inclined ways M, allarranged substantially as and for the purpose herein set forth.

2. I further claim the bent pawl H, with the sliding rod O or itsequivalent, with or without the spring Q, arranged to operate inconnection with the chain F, and pulley D, substantially as and for thepurpose herein set iorth.

N. D. HINMAN. Vitnesses M. M. LIVINGSTON, C. L. TOPLIFIP.

[FIRST PRINTED 1912.]

